Quad Remesher is an automatic quad remeshing (or auto retopology) algorithm.
The French software developer Exoside has released a Blender add-on version of their new Quad Remesher auto-retopology tool. Quad Remesher is based on the renowned ZRemesher in the ZBrush 3D sculpting suite, and comes from the same coder, Maxime Rouca.
A good mesh topology is beneficial to surface smoothness and editability, eases UV texturing and makes a mesh more suitable for rigging and animation.
Quad Remesher is capable of automatically retopologizing organic as well as hard-surface meshes, featuring only quadrangular polygons, ready for subdivision or for use as a base mesh for sculpting more details.
Quad Remesher offers a number of options to influence the result, such as preservation of areas that have materials assigned to them, auto-detecting sharp edges, and using vertex paint to indicate varying polygon density.
A typical workflow would be to use Quad Remesher to retopologize the major features of a mesh, then add Shrinkwrap and Subdivision modifiers or a Multiresolution modifier to increase detail derived from the preserved source mesh.